I actually just picked-up my truck from the dealership after having it sit there for over a week.
Three weeks ago--was on the way back from a friends house late at night and truck just shut off in the middle of the street at about 35 mph. Got it to coast down the hill and off to the shoulder. Had it towed to local dealership. They called next morning and said it was ready for pick-up and said it was too low on fuel. Range on dash showed 78 miles until empty and light wasn't even on. They informed me Rams were notorious for overestimating DTE. (Didn't buy that one bit). I had to pay $89 diagnostic fee even though I only have 3K miles on the truck since they said it shut off because I didn't have the proper amount of fuel in the truck. I didn't argue with it, but now thinking after reading this thread maybe it's the issue others are experiencing and not because I didn't have enough fuel in the truck.
Before then, two times my check engine light has come on without any drivability issues, but noticed it was during both snow storms when temps dropped into single digits. Light would turn off if temps got up around 45/50 degrees. The third time it came on (last Wednesday) I was finally able to drop it off while the light was on. They wouldn't tell me the code, but said it was the E-torque system cooling fan or battery issue and had a ton of harnesses and things to check on the truck. Kept my truck for about a week and had a Chrysler tech come out and run diagnostics on it, drove it over 100 miles and then called to inform me that Chrysler recommended replacing the E-torque system which will be 4-6 weeks for parts. Picked-up the truck this morning and it's running fine, but still has the CEL on. I was at day 31 for my vehicle health report and it finally sent me a report. "Power Train Malfunction- EOBD/Injection System Failure".